Electric welding-machine.



A. 1-1. BUGHENBERfi. ELECTRIC WELDING MACHINE. APPLICATION FILED SEPT.2-5, 190 9.

Patented May 24, 1910.

2 SHEETS-SHEET 1.

' WITNESSES: INVENTOR. 68 c? m i I 4 A. E. BUCHENBERG. ELECTRIC WELDING MACHINE. APPLICATION FILED sum-25, 1909.

959,305. Patented May 24, 1910.

2 SHEETSSHEET 2.

Fig.5.

WITNESSES: INVENTOR. em

- UNITED STATES PATENT OFFICE.

ALVIN BUCHENBERG, OF TOLEDO/OHIO, ASSIG'NOB, BY MESNE ASSIGNMENTS, TO

THE TOLEDO ELECTRIC WELDER COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

ELECTRIC WELDING-MACHINE.

Specification of Letters Patent.

Patented May 24, 1910.

Application filed September 25, 1909. Serial No. 519,619.

To all whom it may concern:

Be it known that I, ALVIN E. BUCHEN- BERG, a citizen of the United States, and a resident of Toledo, in the county of Lucas and 'State of Ohio, have invented a certain new and useful El ctric lVelding-Machine; and I do hereby declare the following to be a full. clear, and exact description of the invention. such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to metal-working apparatus of the class in which themetal is heated to the desired state by the passage of an electric current thercthrough, and is then welded, upset or otherwise operated upon.

The object of my invention is the provision of an apparatus of this class, which is particularly adapted for the welding of drill blades to their shanks, but may he used for other purposes, and which is simple, efficient and rapid in its operation.

The operation, construction and arrangement of the parts of the invention are fully described in the following SPGClfiCzltlOll, and while in its broader aspect it is susceptible of numerous embodiments, a preferred form of the same is illustrated in the accon'ipanying drawings, in which,

Figure 1 is a plau of the machine embodying my invention with portions broken away. Fig. 2 is a side elevation of the same. Fig". 3 is an end view thereof with a portion broken away. Figs. 4 and 5 are enlarged details of the shank-holder. Figs. 6 and 7 are similar views of the blade-chuck or holder, and Fig. 8 is a slightly enlarged section on the line in Fig. l with a drillblade in position therein.

Referring to the d awings, 'l designates the base or frame of the n'1achine,-on the top of which near the opposite ends thereof are bolted or otherwise suitably secured, thestandnrds 2 and 3, as shown. These standards are electrically connected to the secondary 01 a transformer (not shown) through leads 4 tin Fig. 2..

The standard 2 is formed onits inner face rear its top with a horizontally-projecting tapered boss 5 having an axial. socket or bore 6 therein, which continues back into the standard as shown in Fig. 8. The boss 5 is 'longitudinally split as at 7 and has a handwheel 8 threaded on its tapered surface, whereby to adapt a turning of such wheel thereon to effect a contraction of the outer end of theboss to grip an article fitted within the socket 6. i

A bushing or chuck 9- fits within the socket- 6 and is provided at its outer end with a series of longitudinal slots 10 to adapt it to cooperate with the boss 5 to hold the drill-blade or work 11 when the fingers of such boss are contracted. A set screw 12 secures the chuck 9 within the standard. The movement of the work within the chuck is limited by contact with an adjustable stop or screw 13, which is threaded into the standard with its inner end projecting longitudinally into the inner end of the socket 6. \Vorking through the standard 3 by which it is suitably guided is :1 horizontally-disposed longitudinally-movable arm or bar 14, which is in line with the work-holding chuck 9 and is adapted to have its movements toward and away from the same. Fitted into a socket in the inner end of the arm or bar 14 and secured therein by a set screw 15 is a holder 16 for the shank or part of the work to be welded to the blade or part 11 of the work which is held by the chuck 9. The socket 17 of this holder registers with the socket (3 in the standard 2 and is shaped to suit the work to be held thereby. A shaft 18 is journaled in the standard 3 beneath the arm or bar 14:, transversely thereof, and carries a pinion 15) within the standard for meshing with a rack 20 on the under side of the bar 14, whereby a longitudinal movement is imparted to such bar by a turning of the pinion. A spiderwvheel :21 is mounted on the forward end of the shaft 18 fol-operating the same.

Projecting rearwardly from the outer end of the arm or bar H is ail-arm 22 through the outer end of which is threaded one end of a rod 23. This rod is adapted to have its tree eud' move into contact with and oscillate a lever 24 when the bar 14 has reached a predetermined pointin forward -or welding movement. The lever 2-4 is carried by a vertical pivot 25 aud when oscillated by the rod 23 effects auinward movenieut oi the rod 26 and o )UHS the switch 27 in circuit with the .transiornicr of the maveiding opera switch 2 rhown as being inc'us 2: housing and may be of any sui struction, the same beiu ically SilCWil in the (in? For the purpose sf file work irom the 101 or eutwzu'd mavement I such 111 has & longi'h i-hmugh in n:

mace within he Work from mined it is to be wvided, Filo piecvs of w: Pk when lens was .65

n n-v mm ng' mcvmizam, me we (Ln-k, a bar rem x-002" from Such boss being axially socketed and longitudihaving a socketed work-holding bar, means nally split and said socket extending within for moving such bar and means fixed rela- 3.

said standard, a chuck fitted within said tive to said bar and operative to eject work socket and hax'ing; its outer end split, an ad therefronr'at a predetermined point in a re- 5 justabic stop carried by said standard and tracting movement thereof.

projecting into the inner end of said socket In testimony whereof, I have hereunto to serve a work gage, a wheel threaded t0 signed my name to this specification in the a. such boss to coiiperate with said boss and presence of two subscribing witnesses.

chuck to q'rip work inserted within the T 1 1O latter a sezond standard spaced fron'i'said ALVIL BUCHENBERG' first standard, a bar carried by said second "Vitnesses: standard for horizontal recipro -atory xnove- C. W. OWEN, mvnis toward and away from said chuck and EMILLE SOIIRIEBER. 

